Metacaulk® Cover Guard™ is a single component fire-rated gasket for use with electrical boxes when addressing the "24-inch rule". Metacaulk® Cover Guard™ is applied by hand, does not take up the volume in the electrical box and is a labor-saving replacement for putty pads in normal applications. When exposed to heat, Metacaulk® Cover Guard™ is highly intumescent, and it will expand forming a char that will seal off the opening and prevent the spread of flames and limit the temperature rise on the unexposed surfaces.
Complies to Required Environmental Testing of Accelerated Aging and High Humidity as per UL 1479 Fire Test of Through-Penetration Firestops. US Patent Number 6,207,085.
Metacaulk® Cover Guard™ Features
*Tested in a UL 411 wall assembly/section to ASTM E90.